Display Driving Voltage Feedback for Fast Response and Lower Power
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Solution Overview
Problem
Existing display devices face challenges in reducing power consumption while maintaining fast response speeds and efficient image display.
Innovation Solution
Incorporation of a voltage detector and driving controller that sense and adjust driving voltages based on current flow, using a comparator, amplification circuit, gain control circuit, and conversion circuit to optimize voltage levels for power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If driving voltage is increased to maintain fast response speeds, then response speed is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic voltage adjustment by detecting actual pixel voltage levels and adapting the driving voltage accordingly. The voltage detector monitors voltage drops across pixels, and the voltage generator adjusts driving voltages in real-time based on this feedback, allowing the system to optimize between response speed and power consumption dynamically rather than using fixed high voltage
Solution Approach 2:
The patent introduces a feedback mechanism where the voltage detector continuously monitors the actual voltage levels at pixel terminals and feeds this information back to the voltage generator. This closed-loop control enables the system to adjust driving voltages based on actual performance, preventing unnecessary power consumption while maintaining adequate response speeds
2Use of energy by moving object
If driving voltage is dynamically adjusted to reduce power consumption, then power consumption is reduced, but voltage control complexity increases
Solution Approach 1:
The patent introduces a voltage detector as an intermediary component between the voltage generator and the display panel. This detector measures actual pixel voltages and provides feedback signals that mediate the voltage adjustment process, simplifying the control architecture by separating the measurement and control functions
Solution Approach 2:
The patent changes the control parameter from fixed voltage levels to dynamically adjusted voltage levels based on detected pixel conditions. By monitoring voltage drops and adjusting driving voltages accordingly, the system optimizes power consumption while the voltage generator handles the complexity of parameter transformation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces power consumption by dynamically controlling driving voltages, enhancing power efficiency and maintaining fast response speeds in display devices.
Implementation Method 1
a voltage detector between the voltage generator and the driving voltage line, and configured to sense a sensing voltage corresponding to a current flowing into the driving voltage line
Implementation Method 2
an amplification circuit connected to a first end of the sensing resistor and a second end of the sensing resistor, and configured to output an output voltage by amplifying a sensing voltage sensed through the first end
Data Source
AI summary
A display device includes: a display panel including a pixel to receive a driving voltage through a driving voltage line; a panel driver to drive the display panel; a voltage generator to generate the driving voltage, and determine a voltage level of the driving voltage based on a voltage control signal; a driving controller to control a driving of the panel driver, and supply the voltage control signal to the voltage generator; and a voltage detector between the voltage generator and the driving voltage line, and to sense a sensing voltage corresponding to a current flowing into the driving voltage line, and output a sensing signal based on the sensing voltage. The driving controller is to: receive the sensing signal from the voltage detector; and generate the voltage control signal based on the sensing signal.